Cutter head



; Aug. 25, 1931. F. L. LANE 1,8 1

CUTTER HEAD Filed Feb. '21, 1927 2 Sheets-Sheet 1 lllllllh TZZZZ Z72 7Z6- II" Ill-7 war w I Aug. 25, 1931. F. LANE 1,820,231

CUTTER HEAD Filed Feb. 21, 1927 z Sheets-Sheet 2 LEM-1:! m

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the appended claims.

ings is provided With a set of rOfileknives 10 and a set of grooving knives 11. The pro-- Patented Aflg- 1 j COMPANY; or, BELOIT, ,wrsoonsm FRANKLIN .L. LANE, or 14mm, Wisconsin, nss e v'on To YATns-Aflmmoen iviiionmn Abnmeon fil d renewal;1:21; jer idi'iiogiavb i l 1 The present invention pertains to vvood Workingmachines, and has to do particularly with the mounting of the knives in the cutter heads'of suchmachinesga 5" The principal-ob ect of the invention is to' provide a novel device by meansof which all ot the knives in one setsin a cutter head may be retracted or projected" simultaneously and knives and a set of grooving knives, since'it l permits the grooving "knives to b'eidrawnback: 1:) out of the way while theprofile knives are:

being trued up, andzthen permitsthemto be V returned'quickly andaccurately'to cutting- V 'position 'after such truing operation. t Another-importantobject is to-provide a o 20 novel device 'bymeans ofwhich the en'ds of succeeding'grooving knives in a cutter head may be adj ustably positionedat opposite sides of the median plane ofjoutwhereby-tovary v p p thegear:19 'to' retract the holders 15 "and ;75- v endsofzsuch knives are inwardly of'the'line of icntof the" knives 10:: After thegknives .10 Y i have been; trued :11p," the gear 19 imay be:

turned' to project the-holders 15- andvknives j; ,1'1 into 1 their 'formerjgjoperative position thereby obviating' any "necessity for lfidlVlCl iual'readjustmentof the:same/ 1 :1 ;-.E-: iTh' 'groovin'g 'knives i911 are 'mo' ntedfin i the Width'of'the groove being out.

Other 'obj ects and advantages of the in ventionv illbe" evident to those skilled in. the Woodworking art upon a fullun derstand-f- 1 ing ofthe improvement;

Oneform {of the invention is presented herein for the purpose of exemplification, but

it will be, ofocourse;appreciated that' the in-. vention is susceptible of embodiment in other structurally modified forms-comingequally Within the comprehensive scope", of

In the accompanyingdrawings I Q Fig. lis a topview: of acutter head 1nequipped-with the improvement ofthe vention; 9' Fig. 2 is an edge viewof the same;

Fig. 3 is a section, taken on of Fig. 1; and,

Fig. 4 is another seotion,taken on-theline The cutter head. illustrated in the drawfile knives 10 are clamped against seats 12/911 V the periphery of the head by meansof Wedge fp1ates13 which are drawn up against the sides the line preferably-aha K p 'tan ge'nt toa circle conc'entricwyvith the head v Slichfengagement permits the outeri endiotf of thejknivesf'b "boltsj l, and the ossing knives 11; which areal-ranged in alternation Withthe profile knives, are' seatedinlong holders il5 vvhich are'heldindeep sockets 16 in the head by means of screws -'17 ivvli 'ch are The sockets are preferably a "little' Wider .than-the.hol'dersgffop a,purpose hereinaiter;

explainedg s a p i *Thein'ne'r ends of the holdersIS areformed into racks 18, and alkofth'eracks mesh with ,ajgear lQ'vvhich is'journaledfcentrally of: the" head on a hub-likeportion 20' of s same,

The gear} 19 may be turnediin either dl IQCtlOIl by meansof a suitable spannerjvvrenchiwhichfi sleeve likeportion 22 of thesamei When the s'crewsj l'i are loosened, the-gear holders 15 and knives :11 simultaneously" and;

trued upconveniently Without removing the I knives '11 from the head by merely turning knives 11 into positions wherein" the; cutting the holders; at 'ajslighta iigle to the plane of rotation of the he'adr and theidirection of thei*.?s5"= angleof succeeding grooving knives is alternated-from-one side of the plane"o f rotation-i to the other in order-to cut-cleanly'both sides; I I I of the =groove inythe Work, I Each. of -jthe socketsa'l fi' is provided "with two opposed studs-'23 v-1hich-projectrom {the sides Off the socke'twinto engagement It With 3 the sides of the holder." 'The engagement betvveen Ithe"v studs and the holdergis had ataipoint ad- 95 i g end H of the holder, ian'di is jacent the innerv I I point l where' the holder is the holder to be svvung;"laterally about thei .f; studsasa pivotJ 'Eachfioffthe'sockets isralsovloo 1 o 1 V turned upjagai'nst'fthesidesofithe holders;

maybe engagdin notches 2I=formedf in a against the holder with one of the screws advanced into the socket more than the other,

nected with the holders for retracting or prowhereby to swing the cutting edge of the knife in the holder farther into the work, each succcedmg knlfe bein g thus canted 1n an opposite direction.

The body of the cutter head isformed in two parts 25 and 26, and such parts are held inassembled relation to each other by means of screws 27. This sectional construction permits'formation of the sockets 16 in an easy manneig by milling them in one face of the part 25 before assembly, and serves, after assembly, to. hold the gear 19 against axial movement on the portion 20 of the head.

I claim:

1. In acutter head, a body having a plurality of elongated sockets therein, holders in the sockets, knives in the holders, means conjeoting all of the holders simultaneously and to an equal extent longitudinally of the sockets, and means for permittingeach of the knives to be moved separately longitudinally of the sockets.

2. In a cutter head, a body having a plurality of elongated sockets therein, elongated holders arranged longitudinally within the sockets, elongated knives arranged longitudi nally within the holders, means connected" with the holders and operable upon rotation to retract or project all of the holders simul-: taneously and to an equal extent longitudi-- nally of the sockets, and means for permitting each of theknives to be moved separately within the holders longitudinally of the socketswithout disturbing the position of .the holders within the sockets.

3. In a cutter head, a body having a plural-'- ity of sockets therein, holders in thesockets provided with rack portions, knives in the holders, a centrally arranged gear in mesh with the. rack portions of the holders and operable upon rotation to retract or project all of the holders simultaneously and to an equal extent, and means serving to clamp both the holders in the socketsand the knives in the holders.

4. In a cutter head, a body having a socket therein, a holder in the socket, a knife in the ;of the'same for permitting the outer end to holder, means in thesocket engaging with the sides of the holder adjacent the inner end be swung laterally about such engaging means as a pivot, and other means in the socket engaging with the sides of the holder adjacent the outer end of the same for securing the outer end in any desired position laterally of the socket.

5 In a cutter head, a body having a socket therein, a holderin the socket, a knife in the holder, two opposed studs in the socket engaging with the sides of the holder adjacent the inner end of the same for permitting the outer end to be swung laterally about said studs as a pivot, and means in the socket engaging-with the sides of the holder adjacent the outer end of the same for securing the outer end in any desired position laterally of the socket.

6. In a cutter head, a body having a socket therein, a holder in the socket, a knife in the holder, means in the socket engaging with the sides of the holder adjacent the inner end of the same for permitting the outer end to be swung laterally about such engaging means as a pivot, andv two opposed screws in the socket engaging with the sides of the holder adjacent the outer end of the same for securing the outer end in any desired position laterally of the socket.

7. A knife holder for association with a cutter head, characterizedby a slot in which a knife is adapted tobe positioned, and a longitudinally extending rack formation with which an operating pinion is adapted to mesh to project or retract the holder with respect to the cutter head.

8. An elongated knife holder for associatiol'rwith a cutter head, characterized by longitudinally extending slot between the sides of which-a knife is adapted to be position'ed,and a longitudinally extending rack formation with which an operating pinion is adapted to mesh to project or retract the holder with respect to the cutter head.

In testimonywhereof I have hereunto subscribed m name.

. FRANKLIN L. LANE. 

